Letter: Biased source

A letter in your March 8 edition uses information from the Tax Policy Center of the Urban Institute to criticize Donald Trump's tax plan.

How objective is the Urban Institute in evaluating Republican tax plans?

Wikipedia reports that: 'A 2005 study of media bias in The Quarterly Journal of Economics ranked UI as the 11th most liberal of the 50 most-cited think tanks and policy groups' placing it beside the NAACP.

Wikipedia also reports that a study by U.S. News & World Report found that between 2003 and 2010, Urban Institute employees' made $79,529 in political contributions, all of which went to the Democratic Party.